To achieve the structure it takes a damn long time, so my paintings are always in work for a very long time—sometimes a year. Not that I work on them every day. I will have them, and then come back to them after a year, and also return intermittently. It's not easily done. I am not able to do one, two, a painting. I try to do it very quickly, but it doesn't work with me. I simply can't do it. Very often people look and say, 'Ah, fantastic! That's a beautiful painting.' But the moment they are out the door I start working on it. I rework it.

In a talk with Kosinski, before 'Per Kirkeby at the Phillips', in The Phillips Collection, Washington D.C. January, 2013